Cable-controlled intelligent stratification water injection device system and construction technique thereof

Abstract

The invention discloses a cable-controlled intelligent stratification water injection device system and a construction technique thereof. The system comprises a technique tubular column, a ground control device and a computer. The technique tubular column is connected with the computer through a steel pipe cable and the ground control device and provided with a cable-controlled intelligent water distribution device integrated with a vortex flowmeter, flow information of a measured medium is obtained through the vortex flowmeter, and the steel pipe cable is adopted for transmitting the downholestratification flow and stratification pressure data to the computer through the ground control device during normal water injection; the distribution and injection amount of a current layer is set through the computer, and real-time adjustment is conducted by comparing the transmission flow with the distribution and injection amount. The provided cable-controlled intelligent stratification waterinjection technique tubular column can not only meet the intelligent deployment of distribution and injection wells, reduce the phenomenon of nonuniform water absorption between layers and greatly improve the recovery efficiency but also automatically measure and adjust the downhole sub-section flow, store production data in real time and conduct stratum pressure reduction tests.

Description

technical field [0001] The invention belongs to the technical field, and in particular relates to a cable-controlled intelligent layered water injection device system and a construction process thereof. Background technique [0002] Oilfield water injection is one of the most widely used, most effective and most economical measures to increase and stabilize production during oilfield development. With the increasing demand for oilfield development; water injection technology is constantly upgraded; in order to effectively solve the differences between layers and layers; the downhole layered water injection technology is proposed to achieve balanced injection-production development; maximize the reservoir swept volume; improve oilfield recovery yield. Currently commonly used layered water distributors are all mechanical underground water distribution structures. Although layered water injection technology can be realized, there are problems such as complex manual constructio...

AI Technical Summary

Problems solved by technology

Currently commonly used layered water distributors; all are mechanical underground water distribution structures; although layered water injection technology can be realized; but there are problems such as complex manual construction, difficult measurement and adjustment, and poor effect of layered water injection.

At present, the test deployment of layered water injection wells in oilfields is mainly based on steel wire operations; the control platform of the ground well test vehicle controls the lifting and lowering of the steel wires and repeatedly pulls and fishes to replace the fixed nozzles; the workload is heavy; it is impossible to control the real-time monitoring and adjustment instrument on the ground to achieve The measurement and adjustment are synchronized; and the success rate of lateral positioning and docking of the throwing and fishing instrument is low

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